A very nice piece. Well preserved details and mint luster. Sheet metal defects.
Bust of type V, inner obverse only on reverse, variant of REG PO inscription on reverse. Among several obverse/reverse border combinations in the 1663 vintage, this variant is the rarest. Known from only a few pieces.
The coin illustrated in the catalog of L. Ciura.
Note: the book is not the subject of the auction.